Multiplex communications – Channel assignment techniques – Carrier sense multiple access
Patent
1996-09-12
1999-04-06
Nguyen, Chau
Multiplex communications
Channel assignment techniques
Carrier sense multiple access
370466, H04L 12413
Patent
active
058927689
ABSTRACT:
Received Ethernet MII packets are converted to T1/E1 HDSL frames and received T1/E1 HDSL frames are converted into Ethernet MII packets. When Ethernet MII format 4 bit data packets are received they are converted into 8 bit data packets, each 8 bit data packet having an associated signal bit. For T1, a series of twenty-one 8 bit data packets and associated signal bit are combined with three pass bits into a 192 bit T1 HDSL frame. The series of twenty-one multiple 8 bit packets and associated signal bit with three pass bits are transmitted in HDSL format.When T1 HDSL frames having a series of twenty-one 9 bit packets, each 9 bit packet including 8 data bits with an associated signal bit, and three pass bits, are received, the series of twenty-one 9 bit packets and three pass bits are converted into twenty-one groups of 9 bit packets, each 9 bit packet including an 8 bit data packet with an associated signal bit. Each 8 bit data packet is converted into a 4 bit data MII packet and the 4 bit data MII packet is transmitted in 10/100-Base Ethernet packet format. A similiar process occurs for E1 but with a series of twenty-seven 8 bit data packets and associated signal bit combined with five pass bits into a 256 bit E1 HDSL frame.
REFERENCES:
patent: 5056084 (1991-10-01), Le Corre
patent: 5263028 (1993-11-01), Borgnis et al.
patent: 5521924 (1996-05-01), Kakuma et al.
patent: 5640605 (1997-06-01), Johnson et al.
Etherwan System, Inc.
Nguyen Chau
LandOfFree
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